Lowell

Definition

Percival Lowell was an American astronomer who famously campaigned for the existence of a ninth planet, which led to the discovery of Pluto. He also misinterpreted surface features on Mars as canals built by intelligent beings.

5 Must Know Facts For Your Next Test

1. Percival Lowell's predictions about a ninth planet ultimately led to the discovery of Pluto in 1930 by Clyde Tombaugh.
2. Lowell established the Lowell Observatory in Flagstaff, Arizona, in 1894.
3. He was an early proponent of the idea that Mars had artificial canals, which he believed indicated the presence of intelligent life.
4. Lowell's work on Martian canals helped ignite public interest in extraterrestrial life during his time.
5. Despite his contributions, many of Lowell's theories about Mars were later discredited with advancements in astronomical imaging and knowledge.

Review Questions

• What significant astronomical discovery is Percival Lowell associated with?
• How did Percival Lowell interpret surface features on Mars?
• Where did Percival Lowell establish his observatory?

Related terms

Pluto:

A dwarf planet in the Kuiper Belt, discovered by Clyde Tombaugh in 1930.

Mars Canals: Surface features on Mars that were once thought to be evidence of intelligent life but are now understood to be natural formations.

Clyde Tombaugh: An American astronomer who discovered Pluto based on predictions made by Percival Lowell.